Merge PDF Files Online — Fast, Secure & Free

Combine multiple PDF documents into a single polished file instantly. No signup, no installs — just a clean, privacy-first tool that works directly in your browser.

Open Merger How it works
Pro tip: Drag & drop multiple files in the widget to reorder them before merging.
Processed
+2,100,000 files
Rating
4.9/5 (2100+)

Merge PDF — Tool

Use the widget below to add, reorder and combine PDFs. The operation runs in-browser for privacy.

Files processed in your browser — we don’t store your files on our servers.

How to Merge PDF Files — Step by Step

Follow these simple steps to merge multiple PDF files into a single document in seconds.

  1. Open the widget — click “Open Merger” or scroll to the merger area on this page.
  2. Add files — drag & drop your PDFs into the uploader, or click to select files from your device.
  3. Reorder — drag the uploaded files into the desired order (first → last).
  4. Merge — click the Merge button to combine files into one PDF. Wait a few seconds for processing.
  5. Download — download the merged PDF and confirm everything looks correct.

Common use cases

  • Combining multiple invoices or receipts into a single file for accounting.
  • Merging chapters of a report into one document for distribution.
  • Preparing a single PDF for printing or archiving.

Why choose this PDF Merger?

We designed this tool to be fast, private, and easy to use. Below are the core advantages:

Privacy-first

All merging happens in your browser — files are never stored on our servers.

No installs

Works instantly — no software, no signups required.

High fidelity

Preserves original layout, resolution and embedded fonts where possible.

Responsive & fast

Optimized UI for both mobile and desktop with minimal overhead.

Tips & Best Practices

  • Rename files before merging to avoid confusion in the final PDF pages order.
  • Check orientation and page sizes — mix of A4 and Letter may affect print output.
  • If you require bookmarks or a table of contents, add those after merging with an editor if needed.
  • For large PDFs, merge in batches to keep processing time low and avoid browser memory spikes.

Frequently Asked Questions

Ready to merge your PDFs?

Open the widget above, add your files and get a single, merged PDF in seconds — privacy-first and completely free.

Open the Merger